Acetylene torch



Jal. STROBOT.

ACETYLENE TORCH.

A PPLIsATloN map APR.9,1919.

Pa/tnted Aug. L 1922.

2 SHEETS-SHEET l.

www@ l ACETYLENE TORCH.

APPLICATION FILED APR.9,1919.

Patented. Aug.. l, 11922.

2 SHEETS-SHEET 2.

Las i895 M JWOUZ" .TOI-IN J. STROIBOT, OF CHICAGO, ILLINOIS, `ASSIGrbTOR T0 FIDELITY ILLINOIS, A CORPORATION TUBING COMPANY, OF CHICAGO,

BRASS MANUFAC- OF ILLINOIS.

ACETYLENE TORCH.

maaien.

Application filed `A .pril 9,

To all whom t may concern.'

Be it known that l, JOHN J. Srnonor, a citizen of the United States of America, and a resident of Chicago, lllinois,h ave invented a certain new and useful Improve ment in Acetylene Torches, of which the following is a specification.

This invention relates to acetylene torches in general, but more particularly to those which are employed for cutting `and welding metal, and for similarpurposes.

Generally statedthe object of the invenn tion is to provide 4an improved construction and arrangement whereby a cuttingT torch may be converted into a welding torch by means of nozzles which are adapted to be used interchangeably on one and the same torch body, so that the torch can be used for either purpose by simply substituting one nozzle for the other.

It is also an object to provide means whereby the welding torch Amay be readily converted into a torch for burning the* carbon out of an internal combustion engine, by substituting `a special nozzle for the nozzle which is employed for welding purposes.

It is also an object to provide certain details and features of construction `and combinations tending to increase the general `eiiiciency and the desirability of anacetylene torch of this particular construction.

To these and other useful ends the invent tion consists in matters hereinafter set forth and claimed.

In the accompanying drawings- Fig. 1 is a side elevation of a cutting torch to which the invention is applicable.

Fig. 2 is an enlarged vertical section of the head and nozzle portion of the torch.

Fig. 3 is an enlarged section on line 3-3 in Fig. 2.

F ig. 4 is anlenlarged face View of the lower end or discharge surface of the nozzle.

Fig. 5 is a side elevation of the tip or inner nozzle of the structure shown in Fig. 2.

Fig. 6 is a view similar to Fig. 2, but showing the substitute nozzle construction which is employed to convert the torch into a welding torch.

Fig. 7 is a side elevation ofthe tip or inner nozzle shown in Fig. 6.

Fig. 8 isa view similar to Fig 6, ,butlshowing the construction employed `when ther Specification of Letters Patent.

Patented flug. 1, 19212. i919. serial up. 258,723:

torch is to be fused in cutting out carbon y,from 1 an internal combustion engine.'

Fig. 9 is a'rside'elevation of the special nozzle employed, `as shown in Fig. 8, when the torch is used `for eliminating Icarbon from the cylin" er of an internal combustion engine.

As shown in Figs. 1 `to torch comprises a body 1 suitably connected with the tubes 2 and 3,l as shown in vmA prior Patent N o. 1,281,871, issued October 15, 1,918, said tubes having a head 4 secured to their outer ends. The other end of the body has a fitting 5 l the supply of oxygen, and a fitting 6' for Aconnection with the Vsupply of acetylene, vpassages leading through the body 1 to the tube 2for the oxygen, and to the tube 3 for the acetylene. A valve .7, of any suitable character, operated by a lever 8, controls the supply of oxygen to the tube 2, and a valve 9 in the iitting controls the supply of acetylene to the tube 3, in a manner'that will be readily understood. A third valve 10 is provided to control a passage for eX- cess oaygen from the fitting 5 to a smaller tube 11 (seeFig. 2) within the tube 3, whereby the `entra supply of oxygen is available for cutting purposes. The nozzle construction involves an outer nozzle 12 which is screw-connected at 13 to the lower portion -of the `head 4, and a tip or inner nozzle 14 which is screw-connected at 15 to the interior chamber 16 of said head. The outervlnoz'zle has a bore 17 which encloses the tapered portion 18 of the inner nozzle, the latter having a reduced cylindrical portion 19 which occupies the bore 2O in the 5 zinclusive, the

n head, Ait being observed that the middle portion 21 of the inner nozzle is octagonal to provide means for adjusting this nozzle by a wrench, in order to raise and lower it in the chamber 16, and whereby clearance is provided between the sides of this portion and the inner surface of the here 17 for the passage of the acetylene downwardly within the nozzle. A chamber 22 is formed within the threaded upper portion of the nozzle 12 around the shoulder 23 formed at the top of the portion 21, and the lower portion `24 of the inner nozzle is slightly tapered to nt tightly in the lower end of the tapered bore 25 of thev outer nozzle. LA; flange 26 is; formedv atv the lower end of the tapered to be connected with `slight. space distance below the lower end of the nozzle.`

relatively large y The inner nozzle also has a longitudinal bore portion 29 and a relatively small longitudinal bore portion in the t lower end portion thereof, so that the oxygen i which isy discharged from this longitudinal l bore within the inner nozzle meets the acety ling discharged. from the nozzle of the torch.l

"understood 4that to obtain this construction A'28 at the point some 'When the valve 10 is opened, excess oxygen necessary for cutting ylene which is discharged from the passages distance below the nozzle.

is supplied through the tube 11, which mixes with the acetylene, and whereby the effect metal is obtained. For welding purposes, it is necessary, for well known reasons, the oxygen be thoroughly mixed before be therefore, the construction For this purpose, u

and 7 is employed, it being shown in Figs. 6

the nozzles 12 ,and 14 are unscrewed from the head 4, leaving the latter free for con nection to the special nozzle arrangement which is employed for welding purposes.

` This special nozzle construction comprises vbody portion 31, screw connected at 32 with the head 4, just which has its upper end asl the upper end of the nozzle 12 was previously connected thereto. This body por-- tion 31 has a chamber 33 formed therein below the lower'end of thebore 20 in the head, and at the lower end of this bore 33 a shoulder 34 is formed, having a restricted bore 35 at the Vvcenter thereof,leading to the i, lower threaded bore portion 36 in the lower l is discharged end ofthe body of the nozzle, the threaded bore portion 36 being of somewhat greater diameter than the` bore 35as shown iii the drawings. The tipportion 37 of the nozzle is preferably made in upper and lower secs screw-connected together at B8,

ed portion 39 screwed into the lower portion of the bore 36 this portion 39 having a beveled oidished recess 40 in the upper end there-of.

` A `bore `41 extends downwardly through the upper section of the tip," and connectsv with smaller bore 42 `through which the mixture ofl oxygen and acetylene into the atmosphere.v lt will be seen thatthis bore 42, and also the upper end portion of the bore 41 inthe upper sec-k tion of the tip, are practically of the same diameteras the bore 49but preferably a little larger. Thus the large portion in the kbore 41 forms a sort of expanding and mixi .ingchamber into which l ylene are driven through the restricted up-A the oxygen and acetthat the acetylene andv `the nozzle of the torch,

per end portion of this bore. They tip or in# ner nozzle comprises an upper portion 43 which is screwed into the threaded bore 16 formed in the head,v and which has a reduced cylindrical portion 44 enclosed in the bore 2O of the head. This tip or inner nozzle also has a hexagonal portion 45 at the lower end of the portion 44, which occupies the chamber 33, the latter being considerably greater in diameter thany this portion 45, so that ample clearance and space are provided around this hexagonal portion of the tip or inner nozzle. The latter also has a lower end portion 4o' provided with a beveled lower end portion 47, the latter being disposed imme diately above the recess of the portion 46 being slightly less than the diameter of the boreJ 35, whereby the acetylene passes froin'the tube 3 into the bore 20 and then downwardly into the mixing chamber or spaced formed around the lower end y47 of the tip or inner nozzle. The latter is also provided with a bore 4S which terminates in a smaller bore 49 that terminates at the tip or apex of theportion 47, so that the oxygen passes downwardly through the tip or inner nozzle and mixes with the acetylene before the mixture enters the bore 41 of the nozzle, and whereby the proper mixture is formed before the discharge takes place from chamber is formed within the bore thereof, around the lower end ofthe tip or inner nozzle, to receive the acetylene from the bore 35, whereby the desired mixing action is ensured.

Thus a welding nozzle is provided which is adapted to be used interchangeably with a. cutting nozzle on one and the saine torch.

ln Fig, 8 the construction is substantially the saine as that hown in Fig. 6, but the tip a space or 35 atthe upper end it being observed that' 40, and the diameter 37 is omitted, and in its place a tip 50 is provided which has a reduced portion 51 that is screwed upwardly into the threaded socket 3,6, and which is provided with a'` beveled seat 52 at its upper end to engage the conical lowerend portion 47 of the inner tip or nozzle. The tip 50 has along tube 53 screwed into the lower end thereof, in alinenient with the bore 54, which latter` communicates with the bore 49 of the tip `or inner nozzle. With this arrangement only oxygen will be discharged froin the tube 53, inasmuch as the acetylene cannot pass'into the bore 54, the discharge of acetylene being prevented where the portion V51 tightly engages the conical lower end 47 of the tip or inner nozn zle. Of course, as such time, the valve 9 can be closed, but tov prevent accident, the tip portion 51 and theinnernozzle portion 47 are preferably so adjusted that they are very tightlyin engagement with eachother, in the manner explained;

What T claim as my invention is y 1. In a torch equipment for different kinds llO i ,tenias of work, one kind of work involving the use of a nozzle structure adapted to discharge the 'oxygen and acetylene separately, thereby to adapt the torch for cutting purposes, and another kind of work involving the use or a second nozzle structure adapted to mix the oxygen and acetylene before being discharged, thereby to adapt the torch Afor welding purposes, the combination of a head having an externally threaded portion common to and whereon said nozzles are interchangeable to vary the character ol the discharge, means for supplying oxygen to said head, means for supplying` excess oxygen with the acetylene, means for cutting off the the excess oxygen when the welding nozzle is used, and means to control the normal supply of oxygen for the cutting or welding, whereby said nozzles forni means in conjunction with said elements to change the character oit' the discharge and render the torch suitable for either purpose, said cutting nozzle having an inner member :for discharging the oxygen into the atmosphere, said welding nozzle having an inner member t'or discharging the oxygen into the acetylene to 'form a mixture, said head having a threaded socket, and each inner member being threaded to screw into said socket.

2. ln a torch equipment tor different kinds of work, one kind ot work involving the use of a nozzle structure adapted to discharge the oxygen and acetylene separately, thereby to adapt the torch 'for cutting purposes, and another kind of work involving the use oit a second nozzle structure adapted to mix the oxygen and acetylene before being` discharged, thereby to adapt the torch tor welding purposes, the combination oit a head having an externally threaded portion common to and whereon said nozzles are interchangeable to vary the character of the discharge, means lor supplying oxygen to saidhead, means for supplying excess oXygen with the acetylene, means for cutting orf the excess oxygen when the welding nozzle is used, and means to control the normal supply ot oxygen 'for the cutting or welding, whereby said nozzles form means in conjunction with said elements to change the character oll the discharge and render the torch suitable tor either purpose, said head having a threaded lower portion, and a threaded socket in the head above said lower portion, yeach nozzle having an outer member to screw onto said lower portion ot the head, and each nozzle having an inner member to screw into said socket.

'In a torch, ,a head having a threaded socket therein, an oxygen passage leading to said socket, a chamber in the lower portion of said head, an acetylene passage leading to said chamber, a member formed with a longitudinal bore and having its upper end screwed into said socket, a nozzle body screwed onto the lower portion ot said head and formed inside with an extension of said chamber around said member and having a restricted bore and a shoulder around the upper end of said bore, the lower end of said member extending through said restricted bore with clearance tor the passage of the acetylene downwardly through said bore, and a nozzle tip screw-connected with said nozzle body and provided with a bore M leading from the lower end oli said member, there being a mixing space 'formed between the lower end olE said member and the upper end of said nozzle tip.

Ll. A structure as specified in claim 3, the lower end ot said member being conical, the upper end of the nozzle tip being recessed, and said member being adjustable up and down in said socket.

5. A structure as specified in claim 3, said member having an upper screw threaded portion (43), an upper cylindric portion (114), a polygonal portion (4l-5), a lower cylindric portion (46), and a conical lower end (47), substantially as shown and described.

6. A structure as specified in claim 3, and means for converting said torch for a dif,- ferent purpose, comprising a substitute for said nozzle tip, adaated to be used interchangeably therewith, comprising a long tube having an enlargement at the upper end thereo'll to screw into said nozzle body, said enlargement being formed to tightly engage the lower end ot said member, thereby to prevent acetylene from passing into said tube, and whereby only oxygen will be discharged, said tip and its said substitute cooperating to change the character of the discharge and thereby render the torch suitable for one purpose or the other.

7. A structure as specified in claim 3, and means for converting said torch for a different purpose, comprising a substitute for said nozzle tip, adapted to be used interchangeably therewith, comprising a long tube having an enlargement at its upper end to screw into said nozzle body, and means on the torch to shut oil1 the supply of acetylene, so that only oxygen will be discharged from said tube, said tip and its said substitute co* operating to change the character of the discharge and thereby render the torch suitable tor one purpose or the other.

JOHN J. S'llROBOT.v 

